diff --git a/.github/workflows/flake-update.yml b/.github/workflows/flake-update.yml
index fd513d30..7e3e5663 100644
--- a/.github/workflows/flake-update.yml
+++ b/.github/workflows/flake-update.yml
@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: DeterminateSystems/nix-installer-action@v4
+      - uses: DeterminateSystems/nix-installer-action@v5
       - uses: DeterminateSystems/magic-nix-cache-action@v2
       - uses: DeterminateSystems/update-flake-lock@v20
         with: